G - Physics – 11 – B
Patent
G - Physics
11
B
352/24.2
G11B 15/26 (2006.01) G11B 15/093 (2006.01) G11B 15/44 (2006.01)
Patent
CA 1324665
ABSTRACT The present invention resides in a rotation detecting mechanism for a tape recorder including a movable shut-off lever for setting at least a reproducing lever or a head base at a stop state position, with the reproducing lever or the head base being previously set to the reproducing state position, a movable changeover lever for interchangeably setting the normal reproducing direction or the reverse reproducing direction of a magnetic tape, a switching device for selectively shifting and setting the shut-off lever or the changeover lever, a movable trigger lever for selectively triggering the switching device a detecting lever rotationally biased in a direction which is in accordance with the rotation and the rotational direction of a reel block, and a cam gear rotated perpetually in one direction including in turn a first cam surface guiding one end of the detecting lever when the detecting lever is rotationally biased in one direction, a second cam surface guiding one end of the detecting lever when the detecting lever is rotationally biased in the other direction, a detecting pawl protuberantly formed between and independently of the first cam surface and the second cam surface, and a center ring section responsive to the cessation of rotation of the reel block to guide one end of the detecting lever released from rotational biasing towards a rotational trajectory of the 2 detecting pawl. The detecting pawl thrusts the one end of the detecting lever so that the other end of the detecting lever actuates the trigger lever.
603903
Gowling Lafleur Henderson Llp
Sony Corporation
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